Select which type of polygon this figure is, and determine whether it's convex or concave.
a. hexagon; concave
b. heptagon; convex
c. pentagon; concave
d. pentagon; convex
e. hexagon; convex

How many temperature in biratnagar

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.